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Description
Airdog II-5G 165 GPH Air Fuel Separation Lift Pump System 15-16 6.6L GM Duramax LMLWhy GM opted to not include a factory fuel lift pump on all of the early model Duramax's is still a mystery. This lack of consistent fuel pressure coupled with the switch from the proven CP3 to a CP4 injection pump beginning in model year 2011 has spelled disaster on these trucks, especially for those trying to increase the horsepower through performance programmers and or larger displacement injectors. Even at stock power levels, this insufficient
Why GM opted to not include a factory fuel lift pump on all of the early model Duramax's is still a mystery. This lack of consistent fuel pressure coupled with the switch from the proven CP3 to a CP4 injection pump beginning in model year 2011 has spelled disaster on these trucks, especially for those trying to increase the horsepower through performance programmers and/or larger displacement injectors. Even at stock power levels, this insufficient fuel pressure and volume equates to limited overall power, decreased fuel economy, and potentially harming the injection pump and injectors due to a lack of lubrication.
The AirDog II-5G is an all in one premium fuel pump and filtration system for your 2015-2016 LML Duramax diesel. This system removes water, particulates, and entrained air from the diesel fuel. The entrained air that is separated from the fuel is returned to the tank through a small return fitting. The fuel is delivered to the engine at the correct pressure and flow rate to meet the demands of the engine under all operating conditions.
The AirDogII-5G DF-165 systems feature a built in adjustible diaphragm pressure regulator. All AirDog II-5G systems include a complete installation kit. The AirDog II-5G, for this particular application, is preset at 8-10 psi from factory for a stock application. The regulator is adjustible up to 55 psi for fine tuning the system to perfectly match up to your current and future performance upgrades.
HOW IT WORKS:
The AirDog II-5G DF-165 draws fuel from the fuel tank through a 5/8” suction line to reduce the risk of cavitation at the pump. The fuel is then drawn through the water separator where 92% of water is removed per SAE spec 1488. It is then pressurized through a Gerotor pump and sent to the 2 micron fuel filter before it is sent to the injection pump. The air from aerated fuel, due to tank sloshing and engine return lines, is separated and sent back to the tank through the 3/8” return fitting. The excess fuel that the engine does not use is recirculated through the diaphragm regulator back to the suction side of the pump.
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4.0 ★★★★★
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Product Reviews
★★★★★ 4
Great for sensitive skin
I usually buy this from a beauty retailer but they were sold out. So great to find it on Amazon
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Reviewed in the United States on April 24, 2024
★★★★★ 5
Good moisturizer, not too oily.
I often times use this in the morning before starting my day and it tends to really keep it moisturized for at least 4-5 hours. This is someone who has really dry skin and it constantly always having to remoisturize throughout the day. Nonetheless, I would still keep up water intake and try not to touch your face too much after applying. Quality is great and it has a natural smell that is not overpowering. Would def recommend.
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Reviewed in the United States on June 11, 2025
★★★★★ 3
Soothing
Feels good on, no major difference on the dry/flaky skin above eyelid, so time to see a dermatologist.
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Reviewed in the United States on May 1, 2025
★★★★★ 5
So far so good
I’ve been using the Eczema Honey Nourishing Face Serum, and overall I like it. It feels rich and soothing without irritating my sensitive skin. I’ve definitely noticed my face feels more hydrated and calm — but it’s still early to tell if it’s reducing eczema flare‑ups long-term.
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Reviewed in the United States on November 21, 2025
★★★★★ 5
Fast results for a very reasonable price.
I saw very fast results on the sun damaged skin on the tops of my thighs (I’m 62 and scorched myself at 16-17). Softer smoother skin on the backs of my arms and my crepey forearms.
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Reviewed in the United States on June 6, 2026